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posix-cpu-timers: Remove private interval storage

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Posix CPU timers store the interval in private storage for historical
reasons (it_interval used to be a non scalar representation on 32bit
systems). This is gone and there is no reason for duplicated storage
anymore.

Use it_interval everywhere.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "H.J. Lu" <hjl.tools@gmail.com>
Link: https://lkml.kernel.org/r/20190111133500.945255655@linutronix.de
This commit is contained in:
Thomas Gleixner 2019-01-11 14:33:17 +01:00
parent b17d1ce7ef
commit 16118794ed
2 changed files with 7 additions and 8 deletions
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2
include/linux/posix-timers.h
View File

@ -12,7 +12,7 @@ struct siginfo;
struct cpu_timer_list {
struct list_head entry;
u64 expires, incr;
u64 expires;
struct task_struct *task;
int firing;
};

13
kernel/time/posix-cpu-timers.c
View File

@ -67,13 +67,13 @@ static void bump_cpu_timer(struct k_itimer *timer, u64 now)
int i;
u64 delta, incr;
if (timer->it.cpu.incr == 0)
if (!timer->it_interval)
return;
if (now < timer->it.cpu.expires)
return;
incr = timer->it.cpu.incr;
incr = timer->it_interval;
delta = now + incr - timer->it.cpu.expires;
/* Don't use (incr*2 < delta), incr*2 might overflow. */
@ -520,7 +520,7 @@ static void cpu_timer_fire(struct k_itimer *timer)
*/
wake_up_process(timer->it_process);
timer->it.cpu.expires = 0;
} else if (timer->it.cpu.incr == 0) {
} else if (!timer->it_interval) {
/*
* One-shot timer. Clear it as soon as it's fired.
*/
@ -606,7 +606,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags,
*/
ret = 0;
old_incr = timer->it.cpu.incr;
old_incr = timer->it_interval;
old_expires = timer->it.cpu.expires;
if (unlikely(timer->it.cpu.firing)) {
timer->it.cpu.firing = -1;
@ -684,8 +684,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags,
* Install the new reload setting, and
* set up the signal and overrun bookkeeping.
*/
timer->it.cpu.incr = timespec64_to_ns(&new->it_interval);
timer->it_interval = ns_to_ktime(timer->it.cpu.incr);
timer->it_interval = timespec64_to_ktime(new->it_interval);
/*
* This acts as a modification timestamp for the timer,
@ -724,7 +723,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec64 *itp
/*
* Easy part: convert the reload time.
*/
itp->it_interval = ns_to_timespec64(timer->it.cpu.incr);
itp->it_interval = ktime_to_timespec64(timer->it_interval);
if (!timer->it.cpu.expires)
return;